Deadpool & Wolverine is the only MCU ... In the five years between Infinity War and Endgame, Rocket became a different person (raccoon?). He wouldn't have taken the arm from Bucky.

"I feel like Dogpool is the next level after Groot and Rocket Raccoon. And I even said, ‘The merchandising on this alone is worth doing it for.'" He got another clue a year ago about Deadpool ...